A nucleus of mass number 220 initially at rest emits an a

Last updated: 7/2/2023

A nucleus of mass number 220 initially at rest emits an a particle If the Q value of the reaction is 5 5 MeV the energy of the emitted a particle will be 1 4 8 MeV 2 5 4 MeV 3 7 5 MeV 4 6 8 MeV An open container has net 10 gm mass of a radioactive material The net mass in the container after two mean lives is approximately 1 1 35 gm 2 2 5 gm